这里是我该怎么办我的MVP。
让我的演示者在我的视图中调用getter的Instad我有我的视图调用演示者的方法。这样,业务逻辑就与主持人隔离开来,并且无需嘲笑视图即可轻松进行测试。
public interface MyView extends View {
void setObjectsList(List<Object> objects);
void setPresenter(Presenter presenter);
interface Presenter {
void handleObjectSelected(Object object);
}
}
主讲实现MyView.Presenter:
class MyPresenter implements MyView.Presenter {
private final MyView myView;
private List<Object> objects;
public MyPresenter(MyView myView, List<Objects> objects) {
this.myView = myView;
this.objects = objects;
}
public void initialize() {
myView.setPresenter(this);
myView.setObjectsList(objects);
}
@Override
public void handleObjectSelected(Object object) {
// Do something with selected object.
}
}
例MyView的实现:
class ListBoxMyViewImpl implements MyView {
@UiField ListBox listBox;
private Presenter presenter;
private List<Object> objects;
public MyListBoxView() {
objects = Lists.newArrayLists();
}
@Override
public void setObjectsList(List<Object> objects) {
this.objects = objects;
listBox.clear();
for (Object object : objects) {
listBox.addItem(object.toString());
}
}
@Override
public void setPresenter(Presenter presenter) {
this.presenter = presenter;
}
@UiHandler("listBox")
void onChange(ChangeEvent e) {
presenter.handleObjectSelected(objects.get(listBox.getSelectedIndex());
}
...
}
这样你:使用列表框MyView的的
class MyViewImpl implements MyView {
private Presenter presenter;
...
@Override
public void setObjectsList(List<Object> objects) {
// Do something with object list.
}
@Override
public void setPresenter(Presenter presenter) {
this.presenter = presenter;
}
public void somethingHappened() {
presenter.handleObjectSelected(object);
}
}
第2实施例不需要模拟您的视图来测试演示者逻辑。
相反的:
@Mock
MyView view;
List testValues = ...;
when(view.getValues().getValues()).thenReturn(testValues);
result = presenter.method(...);
assertTrue(result == expected);
你会测试你的演讲逻辑:
List testValues = ...;
assertEquals(expected, presenter.method(testValues));